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Consolidated Statements of Cash Flows (Parenthetical) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Consolidated Statements of Cash Flows      
Discontinued operations, net cash proceeds from dispositions $ 1,133.4   $ 10.1
Dividends paid, noncontrolling interest distributions 0.7 4.1 2.6
Income tax refunds $ 10.3 $ 54.7 $ 25.9